My son has asked someone to write a recommendation letter on his behalf. This person is involved in my son's main EC which is outside of school. The recommendation will be in the format of a letter, and will be in addition to the two teacher evaluations required by the common app.
My question is, can the recommender use "Dear Sir or Madam" or should the letters be personally addressed to the dean of admissions or regional adcom at each school?
Also, should the recommender include any specific info on the document to make it easier for the college to file the letter accurately? For instance, should there be a heading at the top with my son's name, name of high school, and possibly other info?